Air$-$perfect conductor interface. A uniform plane wave propagating in air given by E$($z$)=40-60(-$jy$)$ V$-$m$-1$ is normally incident on a perfectly conducting plane located at z $=0.($a$)$ Find the fre$-$ quency and the wavelength of this wave. $($b$)$ Find the corresponding magnetic field Hi$($z$).($c$)$ Find the electric and magnetic field vectors of the reflected wave $[$i$.$e$.,$ E$,($z$)$ and H$.($z$)].($d$)$ Find the total electric field in